Home / 81,543.89-122,334.24-28,953.38

Finding the Fourth Proportional to 81,543.89, 122,334.24 and 28,953.38

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Solution

The fourth proportional to 81,543.89, 122,334.24 and 28,953.38 is: 43,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.89 : 122,334.24 = 28,953.38 : x
  2. Step 2: Convert to fraction form
    81,543.89/122,334.24 = 28,953.38/x
  3. Step 3: Cross multiply
    81,543.89x = 122,334.24 × 28,953.38
  4. Step 4: Simplify right side
    81,543.89x = 3,541,989,737.73
  5. Step 5: Solve for x
    x = 3,541,989,737.73/81,543.89
  6. Step 6: Final answer
    x = 43,436.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.